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No. 609,837. Q Patented Aug. 30, I898.

W. M. RUSSELL.

LOCOMOTIVE.

(Application filed Aug. 21,1897.)

(No Model.)

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UNITED STATES PATENT OFFICE,

IVILLIAM M. RUSSELL, OF NEIV YORK, N. Y., ASSIGNOR OF ONE-HALF TO TOMAS E. DE SOTOLONGO, OF SAME PLACE.

LOCOMOTIVE.

SPECIFICATION formingpart of Letters Patent No. 609,837, dated August 30, 1898.

Application filed August 21, 1897. Serial No. 649,013. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM M. RUSSELL, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Locomotives, of which the following is a specification.

My invention relates more particularly to improvements in the construction and arrangement of the combustion-chambers of boilers, and especially to those in which pulverized fuel is used in connection with locomotives.

The object of the invention is to protect the walls of the combustion-chamber from the action of heat and to cause the heat that would ordinarily radiate from the walls of such chamber to heat water for the boiler.

The invention consists in a locomotive having a cab and a boiler having a combustionchamber that islocated beneath the boiler chamber jacket, so that the feed-water for,

the boiler may be heated by the fire in the combustion-chamber before it passes to the boiler.

The invention also consists in the novel details of improvement and in the combinations of parts that will be more fully hereinafter set forth, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming part thereof, wherein- Figure l is a partly-sectional side elevation of a boiler embodying my invention. Fig. 2 is a vertical cross-section, enlarged, of the boiler and its combustion-chamber.

In the accompanying drawings, in which similar letters of reference indicate corresponding parts in both'views, the letter A indicates a boiler, which may be generally of well known construction and provided with fines a. Beneath the boiler A is a combustion-chamber B, which is shown extending longitudinally the full length of the boiler. The walls of the combustion-chainber B are double, as b b, are spaced apart, and constitute a water jacket or space 13'. The walls I) b are preferably tied together by bolts or rivets c to strengthen them. Each wall 11 b is preferably continuous and curved at the lower part,and the upper longitudinal edges of said walls are secured to the outer sides of the boiler to make a watertight joint. I have shown the edges of wall I) as flanged at (Z and riveted to the boiler at d. The edges of the walls I) I) where they join the boiler A are spaced apart, and the sides of the boilerA, in line with the space E between the plates 1) b, are provided with a suitable number of apertures D, which afford communication between the interior of the boiler and the water-space B of the combustion-chamber B. The ends of the water-space B may be closed by cross-plates or by riveting their corresponding ends together.

The water in jacket 13 will become heated by the fire in combustion-chamber B and will also serve to prevent injury to the walls I) b. In some cases I utilize the water jacket or space E to heat the feed-water for the boiler, and for this purpose I connect a pipe E with wall I) and inject the feed-water for the boiler into jacket or space E. The cool water entering jacket or space B will become heated by the heat that passes to the walls of the coinbustion-chamber and will circulate upward, passing through apertures D into the boiler. Thus the water-j acketed walls of the combustion-chamber B may serve the double purpose of preserving the walls I) b and of heating feedwater.

To protect the inner wall I) of the combus tion-chamber from the direct action of heat, I preferably line the inner surface of said wall with fire-brick or other suitable fireproof material F, as shown.

In the arrangement illustrated in the draw ings the fire is produced by means of pulverized fuel and air, and for this purpose I have shown a pulverizer and blower G, mounted in a cab II of a locomotive I. The pulverizer and blower G is connected with a nozzle G, :that projects through a wall 13 of the combustionchamber B to direct fuel thereinto.

As before stated, the combustion-chamber B leads to the forward end A of the boiler A, and for this purpose the fireproof Wall F is carried up beyond the boiler, as at F forming a channel B3, that communicates with the corresponding ends a of fiues a. At the opposite end of the boiler the ends a of lines a communicate with a chamber J, that leads to a stack or fine K. The pulverized fuel and air that are forced into combustion-chamber B from nozzle G are burned in the form of a flame that extends lengthwise beneath boiler A, and the heat and products of combustion pass thence through chamber B to channel B thence through lines a and chamberK to stack or flue J. Thus the lower part of the boiler, both its ends and its interior, is exposed to the action of the heat and heated products of combustion, and the heat from the flame that would ordinarily radiate to the walls of the combustion-chamber and be lost is saved, in a great measure, by heating the water in the jacket B, and thus assists in heating the water in the boiler, whereby an appreciable economy is effected.

At one or .both ends of the combustionchamber 13 may be located apertures f g, having covers or doors h 1', whereby the ashes and residue from the fuel may be removed. The water-jacket B at one or both ends may also be provided with an aperture L and a cover, door, or valve L to permit the removal of scale and deposits. Part of the wall of chamber K may be removable or in the form of a door, as at N, and part of the wall of channel I B may be similarly arranged, as at M, to perrnit access to the flues a. i

I do not limit my invention to the details of construction shown and described, as they may be varied without departing from the spirit of my invention.

Having now described my invention, what I claim is 1.. A locomotive having a cab and a boiler, a combustion-chamber having two walls provided with a space between them forming a water-jacket, said space or jacket having communication with the interior of the boiler, a pulverizer and blower located in said cab, and a nozzle opening into said combustion-chamber and in communication with said pulverizer and blower, substantially as described.

2. A locomotive having a cab and a boiler, a combustion-chamber having two walls provided with a space between them forming a water-jacket, said walls being connected with the boiler, said boiler having one or more openings leading to the space or jacket between said walls, a pulverizer and blower located in said cab, and a nozzle connected with said pulverizer and blower, said nozzle being located in the front wall of the combustionchamber, substantially as described.

WVILLIAM M. RUSSELL. Witnesses: P. F. BOURNE, L. E. TURNER. 

